Why Is Gold Plating So Common On Cold-pressed Needles?

The gold plating forms a precious metal coating on the metal surface of crimp contact, which significantly impacts the functionality of crimp contact pin. Many connector design specifications require gold plating on pins and contacts to withstand potential physical and chemical changes during long-term operation.

Gold exhibits extremely low chemical reactivity under normal conditions, allowing contact socket crimp to maintain relatively consistent surface properties over extended contact cycles.

Some manufacturers often combine an underlayer nickel layer with a gold plating layer in the production of crimp contact female. This layering process helps to form a uniform coating on the tiny contact surfaces. Such surface treatment has become an industry standard in micro-current and high-density pin designs.